Block-out system and device



Aug. 4, 1936. w STQRCK 2,049,877

BLOCK-OUT SYSTEM AND DEVICE Filed June 25, 1934 3 Sheets-Sheet l Aug. 4, 1936. R w s o c 2,049,877

BLOCK-OUT SYSTEM AND DEVICE Filed June 25, 1954 3 Sheets-Sheet 2 i T :17 l i 1 l l "/21 1 u j l I Aug. 4, 1936.. F. w. STORCK 2,049,877

BLOCK OUT SYSTEM AND DEVICE Filed June 25, 1934 3 Sheets-Sheet Z5 Patented Aug. 4, 1936 PATENT OFFICE BLOCK-OUT SYSTEM AND DEVICE Frederick W. Storck, Arlington, Mass., assignor to Standard Mailing Machines Company, Everett, Mass, a corporation of Massachusetts Application June 25, 1934, Serial No. 732,326

Claims.

My invention relates to a method and devices whereby selected portions of the master copy used in making duplicate copies from the master copy, may be covered and the selected portions blocked out and not duplicated. This method and the devices are particularly desirable in making duplicates of selected portions of business records, especially when it is not desirable to disclose all the information imprinted on the record.

The objects of my invention are as follows: To provide block out covers of the size and shape to cover the selectedportions of the imprinted matter on the master copy; to provide means to hold the block out covers so they can be quickly attached to and detached from the printing drum of a duplicator, and so they will accurately register on the master copy and block only the selected portions of the imprinted matter; to provide a block out device that can be attached to the drum of the duplicator completely independent of connection to the master copy if desired, and to produce a form of block out cover whereby several block out covers of different sizes and shapes may be used in connection with one master copy, and by the use of which several duplicates can be made from one master copy, each having different portions of the imprinted matter printed thereon.

There are three types of duplicators in general 80 use, one by which duplicate copies are made from a stencil, another wherein the master copy is imprinted on a gelatin film and the type of' duplicator with which my improved block out cover is to be used. In the stencil and gelatin types of duplicators, the block out covers are usually attached to the master copy by adhesion, the surface of the stencil and gelatin film being of s sticky nature so the block out covers will adhere to them. In what is known as the wet (0, process duplicators with which my improved block out covers are to be used, it is not practical to attach the block out covers to'the master copy for many reasons.

In selecting material from which to make block 45 out covers, it is preferable to use a non-absorbentv material when a number of copies are to be made from one master copy in a short period of time, in such case the block out cover is liable to absorb the moisture from the moist clear sheets and 60 take up the ink from the master copy and impair its usefulness.

In the drawingsaccompanying this specification and forming a part thereof 2 Fig. 1 is a diagrammatic sectional end view of 7 65 the printing drum of a duplicator as shown in copending application made by me July 21, 1930, Serial No. 469,501. This view shows one method of attaching a block out cover to the printing drum of a duplicator.

Fig. 2 is a sectional end view of the drum of 5 a duplicator which shows another method of securing a block out cover to the printing drum of a duplicator.

Fig. 3 is a side view of the printing drum of a duplicator showing both the master copy and the 10 block out cover as clamped in the clamping device of the printing drum, with the block out cover lying loosely over the master copy.

Fig. 4 is a side view of the printing drum of a duplicator and a plan view of a block out cover 15 held in a groove formed in the periphery of the printing drum.

Fig. 5 shows one form of a block out cover. I Fig. 6 is a form of block out cover having a bar attached by which it can be secured in a groove 20 in the periphery of the printing drum of a duplicator.

In the drawings I2 is the printing drum of a duplicator, and I3 is the pressure roll for pressing the clear sheet of paper against the master copy in the operation of making duplicate copies.

The roll I4 is a combined feeding and moistening roll which cooperates with the roll l5 to feed the clear sheets to contact with the master copy in the process of duplicating the matter imprinted on the master copy. I6 is a container for the moistening fluid and I 1 "is a wick which is immersed in the moistening fluid and positioned to contact with the roll i4 and thereby moisten the clear sheets as they pass between the rolls I4 and l5.

I8 is a shelf to support the clear sheets so they can be fed to the rolls l4 and iii.

The printing drum I2 is provided with a spring controlled clamping device l9 adapted to clamp the master copy 20 to the printing drum l2. As shown in Fig. 1 both the master copy and the block out cover 2| are secured to the printing drum by the clamp l9 and so the block out cover lays outside the master copy.

Fig. 3 shows a preferred means of securing the block out cover to the printing drum. By this means the block out cover is provided with the bar 23, Figs. 5 and 6, which bar is adapted to be frictionally held in the groove 22 formed in the clamp 19. The groove 22 may be formed in the periphery of the drum l2 and function the same.

In Fig. 5 is shown a block out cover 2| formed with a very large opening with the cover portion 3| connected to the bar 23 by the narrow strips 32 5 terial such as paper or the like may be used from which to make the block out covers 2|. When a number of copies are to be made from one master copy, it is preferable to use a water proof material such as waterproofed paper, cloth, metal and the like. I

I am aware that block outcovers have been used heretofore in the art of printing, they have also been used in connection with duplicators in which master copies made in the form of stencils and of gelatin films on which the matter to be duplicated is imprinted, in which portions of the imprinted matter are blocked out by placing block out covers on the surface of the master copy to which they will adhere due to the sticky nature of such master copies. In the case of block out covers used with wet process duplicators, it is not practical to attach the block out covers to themaster copy for two reasons, one because the pressure exerted by the presser roll is so great that it will displace the block out cover, the other reason is, that it will impair the usefulness :of the master copy.

When a number of copies are made from one master copy, each having different portions of the imprinted matter, it is not commercially practical to attach the block out-cover to the master copy, it consumes too much time to attach and align each block out cover, then again there is the liability of their being displaced and spoiling the record being duplicated.

In the use of my system of block out covers in a manufacturing or commercial plant or in any other business where records of their transactions are kept, one master copy can be made and any number of duplicate copies can be made from it, the copies may be of all the imprinted matter, or by using my system of block out covers, a number of copies may be quickly made each having a different portion of the imprinted matter. By

my method, one master copy can be made having imprinted thereon a complete record of each transaction, the portions of-such record required by each branch or department can then be selected by my system of block out, huickly duplicated on separate sheets and distributed. Through the'use of my system of block out covers, any number of differing copies can .be made from one master copy at a high rate of speed. Further it requires no special skill to operate a duplicator in usingmy improved system of block out covers as they are self aligning and can be easily and quickly-attached and detached.

What I claim is:- v

1. In a device for blocking out selected portions of the imprinted matter of a master copy used in a duplicating machine, comprising a block out holder bar adapted to extend lengthwise of the printing drum of a duplicator and adapted to be frictionally held in a slot in the periphery of the printing drum and a block out cover of the size and shape to cover the selected portion of the imprinted matter secured to said holder bar.

2. In a device for blocking out selected portions of the imprinted matter of a master copy used in a duplicating machine, comprising a bar adapted to frictionally engage in a slot in the periphery of the printing drum of a duplicator and a block out cover of the size and shape to cover said selected portions attached to'said bar.

3. In a duplicating machine, a printing drum having a bar for clamping a sheet to the drum and a longitudinal groove for frictionally holding a second sheet relative to said first sheet.

4. In a duplicating machine, a printing drum having a bar for clamping a sheet to the drum, a

longitudinal groove in said bar for frictionally holding a second sheet relative to said clamped sheet.

5. In a duplicating machine, a printing drum having a clamp for securing a sheet thereto, a longitudinal groove associated with-said drum and clamp, a bar member adapted to be frictionally engaged in said groove, a flexible body portion secured to said bar member and whereby said bar may be moved longitudinally within said groove to dispose said body portion relative to said sheet. I

FREDERICK W. STORCK. 

